Method and device for acquiring level of speech frame
An acquisition method and voice frame technology, applied in the field of communications, can solve the problems of inability to process voice frames, unable to obtain voice frame levels, etc., and achieve the effects of reducing frame loss, improving decoded voice quality, and protecting important information.
Active Publication Date: 2013-01-23
HUAWEI TECH CO LTD +1
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[0003] The inventors have found that there are at least the following problems in the prior art: the prior art cannot obtain the level of the speech frame, which may make it impossible to effectively process the speech frame in the future
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[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0025] figure 1 A schematic flow chart of a method for acquiring a speech frame level provided by an embodiment of the present invention, such as figure 1 As shown, the method for obtaining the speech frame level of the present embodiment may include the following steps:
[0026] Step 101, decoding the encoding parameters of the speech frame to ...
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The embodiment of the invention provides a method and a device for acquiring the level of a speech frame. The method comprises the steps of: decoding and generating two groups of speech decoding signals in the case of frame loss and in the case of no frame loss according to coding parameters of a speech frame; extracting characteristic parameters based on the two groups of speech decoding signals; acquiring a speech frame subdivision level corresponding to a characteristic parameter vector of the characteristic parameters of the two groups of speech decoding signals according to the characteristic parameter vector, a predetermined rule and a mathematic model established in advance for the characteristic parameter vector of the speech frame on the speech frame subdivision level, so that the level of the speech frame can be acquired. Furthermore, after the level of the speech frame is acquired, a corresponding protection policy can be adopted for the speech frame; the speech frame can be further effectively protected so that important information in the speech signal can be effectively protected, the occurrence of speech frame loss phenomenon can be effectively reduced, and the speech decoding quality at the receiving end is improved.
Description
technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a method and device for acquiring speech frame levels. Background technique [0002] In a voice communication system, a voice signal can be divided into a voice frame and a silence frame by using a voice activity detection (Voice Activity Detector, VAD for short) algorithm. Among them, the decoded voice quality of the receiving end mainly depends on the voice frame. Due to the instability of wireless channel and network transmission, frame loss of voice frames occurs from time to time. [0003] The inventors have found that at least the following problems exist in the prior art: the prior art cannot obtain the level of the speech frame, which may make it impossible to effectively process the speech frame in the future. Contents of the invention [0004] Embodiments of the present invention provide a method and device for acquiring a speech frame level, w...
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IPC IPC(8): G10L25/24G10L25/78G10L25/69
Inventor 刘加王林芳李明刘小青
Owner HUAWEI TECH CO LTD